Coin operated typewriter control apparatus



y 27,1943- 4 J. B. GRAHAM 2,325,244

COIN OPERATED TYPEWRITER CONTROL APPARATUS Filed Aug. 5, 1940 .2 Sheets-Sheet 1 6 INVENTOR.

ATTORNEY.

2 Sheets-sheaf, 2

July 27, 1943. J, B. GRAHAM com OIERATED TYPEWRI'IIER CONTROL APPARATUS Filed Aug. 3, 194g ATTORNEY. I

install Patented July 27, 1943 a i" t i j'- :5,

- COINOPERATED TYPEWR-XT-ER CONT-ROL APPARATUS 1 :1

, ies B. er'ttnamssan magma-tut; assigitjdi oi? lone-halt Calif.

- inpu -meringue 3, 1940,; s riarrq5ac5r fiz'cl'aim (Gr m-19s)?" My invention relates to a coin'oper'ated typewriter control apparatus; more particularly for use .in periodical public rentattofftypewriters and the objects of my invention are: H

First, to provide an apparatusof thisiclass which may be positioned in numerous different public places "for by persons desiringweewriter service whereby said persons may 'ilse' a typewriter controlled by my apparatiis over a given periodcf'tiihefor a-coiir which'inay be inserted. in a. coin receivingdevice in ccnn'ecticn with my apparatus;

" Second,'t0 provide an alp i aratus of' 'this class typewriter keys until another-coin is ir serteti unauthorized persons;

to'rs tafnley ErI StensrucLQSan Diego,

ings emdvfo ithe characters of 2 reference thereon which. form a-part; of thiszianplication. in which:

Figure-i1- isi av fragmentary sectional" view:- of my :coin operated typewriter cQntmi, apparatus taken'fromtheiine i- -l1 of Fig- Eshowihglditt- .grammatical'ly'by dash lines the 1 connection of portions 0f aconventionaktypewritr with said apparatus '21 is a fragmentarysectional viewtaken iromthe line 2 *--"2-' of Figi-x lzzshowing portions broken away to' facilitate the illustrantionyFigt 3 4s ariragmentary 'secztiohalfiview takenirom the=1ine' "3 3 of Fig;-'-1:showing'diagrammatically the connection got 1 the coin "re;

ceiving mechanism with my coin "operatedtype- Fourth, to' provide an apparatus "orthis'tiats .c

in which a timing device controls thelatdh mechanism in connection lwith thetjpewriter andwhich timing mechanism-is set or interval I operation by a coin receiving devicej' Fifth, to provide an apparatus of this ci'ass which is not easily taihpered iwith aniwhichis accurate and 'eflicient in limiting 'the tirne'lope rating period of the typewriter connection therewith; 5 I

: Sixth, to provide an ap aratus at tiiis' class which'is very compacta'nd easvto'operafte and Seventh; to provide ahappara tiis of "this ciass which renders the "typewriter: in connection therewith inoperative until the service thereof is paidfojrj u I Eighth, to provide' an apparatus of this class which is applicable to variousjtypes and makes of typewriters; and Ninth, to provide an apparatiis of tiiisi' class which is very simple andv economicai of. con struction, efficient its action and; which wi ll not readily deteriorateor get out-oferder.

With these andother'objects in viewaswili appearhereinafter, my invention consists of certain ,novel features of construction, combine. tion and arrangement of partsand portions, as will be hereinafter described in detail and bar'- ticuiarly set Earth-mine amended claims, ref

erencebeing had to thea'c'conip'anj'ing dralw writer tcontroi r apparatus; "also showing by dash ,lihes varying. positions of parts of said apparatu's'ahd Fig.1 4t'is an'enlarg-ed fragmentarv'sem tionaifviewztakexi"fromiihe line li -4: .of' Fig, 3

' showing joortioiis tih eievation to ffaciiitate 'thef'iilustration. a

I wsimnt-r characters a referents raet tt-amt lar-izparts 'andiporticris throughoutthe several views oftthe drawiiig's; t

The c'abiriet- I, cabinet lock 2, mechanisiii casing 3, tiniingLmechanism. '4, iratehetwheeL'S, ratchet *pawls afi and 1;operatir'ig-iever 8-, 1ath arm 8,- hip lever 10, typewriter I my i retaining. 1eve'r 'I'l, iatohmember l2, latch member operating lever: 13 and; the coin. receiving mechanism l4, (:OIlStitilt the irincipal parts and portions of smy'ooifi I operated typewriter control appara struction and is enclosed at its up er side by means of the top member lawhi'ch'is hinged at its one side 'on th'e' hinge-lb,"as shown best in. Fig. 1 'of the drawings-and forms atabl'e topffcr supporting a typewriter thereon;

The cabinet lock 2 "'is a; conventional id securely in closed positiom isshowri 'of' the drawings. 'Ihertybewrite'r', as 'sh'oiirn'by dash lines in 1 of the draw ngs is'secu'r'ed to the top-member 'lct'by means of'the' bolts l c,

with their head. t'ottio is' internally off the; -tp m e 9; e ewri er met be removed from the top "member" a m un ess;

cabinet I is opened. memehtmsm tasmgam '50 positione'd' inside the: cabinet [j ani is arranged to contain and support the =prihc'ir5ztl intent; nism' of my-appairatus. F A The timing inechar'iism' 4 as; semi-res c'ti the l'oweraside o f the substantially re'cta'ngu ate member-mas shown best'iti ri 's; 2" an'd'S b f'th The cabinet I substaht-ially'boxlike 'irrcent v v t mbler loclitwhich is arranged to lock theme-member works. This timeclock mechanism 4 is a substantially conventional mechanism such as is used in pocket watches. The main spring means of this timeclock mechanism 4 is modified, otherwise this timing mechanism 4 is a partially complete clock works. The main springcasing 4b of this timing mechanism 4, as shown best in Fig. 4 of the drawing is provided with an outwardly extending shaft 40 to which is secured the. ratchet wheel by means of a pin So. It will be" here noted that the conventional main spring of the timing mechanism 4 is removed from the drawings and is in the form of a modified clock 3, as shown best in Figs. 1 and 3 of the drawings. Thisbracket I2a is provided with anoutwardly extending portion I2b in which is positioned the pin I 2c,"which pin I forms the pivotal support main spring casing 4b, as shown best in Fig. 4 or.

the drawings. The ratchet pawls 6' andlincon nection with the operating lever 8 provide rigid engaged relation of the operating lever 8 with the ratchet wheel Sin connection' 'with the-main spring casing 4b. The operating lever 8 is piv-..-- otally mounted on the hub portion 55 of the ratchet wheel 5, as'shown-ibest ln-FigsbB andA or the" drawings. Secured ito-one' end'ofthis op erating lever a is a tension' spring 8a whichitends to pivot the operating 1ever18 onthe hub portion 5b. of. the ratchetwheeli. The ratchetipawlsfi and 'I,-'-in engagementwithfthe ratchet whee1115, I transmit the 'tension'oi the spring. 8a .to the ratchet wheel 5'in connection'with the main springcaising 4b' providing operating;.tension on the main s'pring casing- 4b tending .torevolve the casing 14b. and operate? the? modified clockworks in the conventional manner by'means of the ear teeth 4d attheperiphery of the main spring casing. 4b; 1 In 1 this manner the tension spring 8a replaces the conventional clockworks'amain'spring which is omitted from themain spring casing 4b,

as shown best in Fig. .4 ofthe drawings. .iRigidly secured to the upper side of. theroperatingllever 8' is an upwardly extending pin 8b .lai .showriv best in Figs. 2 and 3 of the drawings. Q. .-.Pivotally.mounted on the plate 4a liS'. the latch arm 9, as shown best in Fig. 310ithefdrawings; This latch arm 9 is pivotallym'ountedon'the pin 941 at its one *end "and is provided" with "a spacer 9b thereon intermediatetheplate 4a and the end of thelatcharmt; The tension spring for the latch member I2. This latch member I2 is provided with a pair of substantially parallel spaced arm members I2d and I 2e, as shown best in Fig.- 3 of the drawings, These arm portions IZd and m are provided with hook portions I21 vand I2g respectively. The hook portions I2f and 129 are arranged to engage the edge portion IIe of the typewriter key retaining lever I I for limlit'i'ng it pivotal movement urged by the spring I Ic, as shown by dash lines in Figs. 1 and 3 of jor'j the. drawings. Secured to the arm portion I2e of the latch member I2 is a tension spring I2'h.

The opposite end of the spring I2h is secured on i an outwardly extending portion I27 of the bracket I2.a, .a s. shown best in Fig. 3 of the drawings.

.The' 'ang'ularly extending portion I2lc of the bracket I2a-is arrangedto limit the pivotal move- T ment of. the: typewriter. key retaining lever II urged by the. spring He and .to holdthe 'same in the solid line position; as shown best .in Figs. 1 and 3'of;the-drawings.. .The latch member I2 is also. providedwith Edownwardly and outwardly extending portions; I 2m in which is positioned a pin I2z :ThispinIZnis positioned in the slotted portion :1 3a orthe latch member operating lever I 3. This latchjmember. operating lever I 3'is' pivotally-mounted on the pin vI3by-secured to the bracket I30, which bracket I30 ispositionedon thelinnerside'of the mechanism casing 3, as shown" best in Fig. 3;tof the drawings. Secured t'o theopp'osite end ofthe; latch member operatinglever IB from the latch member; I2 is .a pair 'rotendto-endconnected coil'springs I3rl. One

9c is arranged to force theilatch:arm-9-:inwardly toward the upwardly extending -pin.f8b of the operating lever 8. 'I'he;.latch arm S'iisprovided with a notch portion in its one sidearranged toengage a. pin Ifla'extending.upwardlyfromthe trip lever I 0. The extending end of the latch arm 9 is curvedandis, arranged vtoxbeengaged by the pin 8b of the operating lever-8. 1

,The .trip lever I0 is pivotallymounted on .the

of thesesprings is'secured to'the latch member operating lever I3 .and th e .othersprin is secured tothe inwardlyextending portion a of the reciprocating mfil'nber Nb of the coin receiving mechanism I4, as shown best in Fig.-3.of the drawings. it being noted ti atthe springs I3d provide yieldable connecting. operating means for the latch member operating lever I3 when the inwardly extending portion I4 a of thecoin receivingmechanism I 4 assumes the dash'line position C,'as shown in Fig. 3Qf the drawings. The member I417 of the coin receivingmechanism I4 is modified and provided with acutawayportion Me, which cutaway .portion I 4c: is arranged to engage the pin 8150f the operatinglever'ti, as shown by dash lines in Fig. 3 of the drawings.

- The principalparts and portionsof the coin repin lob secured to andextending upwardly-from the plate member 4a, as shown best in Fig. 3 of the drawings. Secured to one end fcthe trip leverIO is.a,tension spring 100 which tends" to pivotthe trip'member III on the pin "lb and force it into thedash line position F, asshown in Fig. 3 of the drawings. The typewriterkeyretaining lever II i pivotally mounted-on .a' pin Na in connectionwith the bracket I I b secured on:the

top member 3a of the mechanism casingii. This top member 3a is provided .with aslotted portion 31) therein in-which the typewriterkey retaining lever I I is shiftably positionedii Secured to. this typewriter keyretaining lever-I I is a tension spring c; which is supported 'by the pinqIId extending fromthe underside of; the topmember 3a. as shown best in Fig.1. ofthe drawings.

The latch member I 2 is pivotally mounted on .a bracket vI fie which is secured by means or, screws to the'bottomportion 3:; of the mechanism casing ceiving mechanism. are conventional; however, the portion I4a. of the member I4?) is arranged in connected-relation with. a spring l4d, -which spring i ld tends to hold the member MD in the solid line position, as shown in Fig. 3 of thedrawings. It'will be here noted that the general timing mechanism and the general coin receiving mechanism disclosed herein are conventional and no part of my present invention. 4

The operation of my coinoperated typewriter control-apparatus is substantially as follows:

asses. v I

ing end, which 5 notch por tion;- 1= l=:f is arranged to en-gage the lowerg-siie bf the ty pewriter lteymmttrelmember i l; as shown best in the drawings,- whereby th is "typewriter key -control bar member A is seen-rec in rigid position :so that "none of the typewriter. keys may be pressed .d'ownwardly the normal ep'erating :m'anner; T'he slotted" portion- --l-d in I the top member l a or the cabinet 1 provides suflicientroom for pivotal -movementof the typewriter "key retaining lever 41, asshown best in Fi Figure 1 of the drawings ustrates the writing key retaining lever 'l in disengaged relationwi th the-typewriter key control bar A which position permits normal operation of the typewriter.

Assuming that the'typewriter key retaining lever H is in the dash lineposition B and that a person wishes to use the typewriter, said person must insert a coin into the coin receiving mechanism l4 and press the member Mb into the dash line position C as shown best in Fig. 3 of the drawings. When this member Mb passes 'inwardly to the dash line position C; the cutaway portion 14c thereof engages the upwardly extending pin 8b of the operating lever B forcing said operating lever 8 into the dash. line position D carrying with it the trip lever Ill. pawl members 6 and 1 engage the ratchet wheel 5 when the operating lever is in the dash line position D and the clockworks in connection with the main spring casing 411 start to operate in the conventional manner under the force exerted by the tension spring 8a, in connection therewith. When the operating lever B is forced into the dash line position D by the cutaway portion Me of the member Mb, the trip lever I is pressed into the solid line position, as shown best in Fig. 3

of the drawings and the notch portion 9d of the latch arm 9 slips over the upwardly extending pin llla of the trip lever Ill and latches the trip lever ll) in the solid line position, as shown best in Fig. 3 of the drawings; of the coin receiving device is pressed inwardly, to the dash line position C, the latch member I2 is shifted to the dash line position J by means of the lever l3 and springs 13d and is then released I to the dash line position'H as the portion Mb returns to the solid line position permitting the typewriter key retaining lever II to shift and release the key control bar A.

The timing mechanism 4 operates slowly in the" conventional manner and permits the operating lever 8 in connection with. the ratchet wheel 5 to pivot slowly toward the latch arm 9, as indicated by thearrow in Fig. 3 of the drawings When the pin 81) of the operating lever 8 engages I the curved portion of the latch arm 9, the latch I arm 9 is shifted into the dash line position E releasing the pin Illa. from the notch 9d in the latch arm 9 permitting the trip lever l0 to snap into the dash line position F. When the trip The ratchet mechanism :1 4. rt'iwill'be heremoted that? when :a icoin is inserted in lthef coin receiving amec'hamama and thelrnemherflb isipressed'inwar y 'inlt'ithe:dash line position C; thercoil' spr'rngs- 13d sintereonnecting the portion Ma and theacend -.of 'zthelatch:memberloperating lrever' ttt tendtto shift the ilatch bperatinglever, 113! into the dash lme position Gwhereby the edge pcrtion' le of -theitypewriter key retaining lever :I. l 1 is engaged I '10 et the drawi'ngs.

by the hook portionixl of -the latch member 12 ventin'githegten'sio spring I l to -from "releasing typewriter key aining- :lever r l l from the typewriter keycontrol'bar member A e fcrethe ccin' I is :withh-i' the 'cabinet li; :ziThe trip lever l ll at its portion llld engages the edgeportion He of the typewriter key retaining lever II and holds ,the'lower end portion I lg thereof inwardly between the arm portion I26 and i201 of the latch member l2 while the latch member I2 is shifting from the dash line positionH tothedash line position J. This latch member l2 assumes the dash line position J before the end portion 80 of I the operating lever 8 engages said trip lever Ill I and disengages said trip lever [0 from the edge He of the typewriter key-retaining lever ll. The particular'structure as disclosed is arranged to limit the use of the typewriter in connection therewith to substantially thirty minute periods; however, the stroke of the operating lever 8 in 'its relation with the latch arm 9, may be increased or decreased to provide-different length periods of time. The ratchet pawls 6 and I are arranged to alternate in their engaged relation with the teethportions 8d so that one of the pawls 6 and l engages a notch portion while the other engages oneof the teeth'portions providing an engaged relation of the pawls liand 1 equivalent to one- 3 1 half the spaced relation of the teeth 8d providing I fine adjustment of time periods in relation with When the portion Mb;

lever It snaps into the dash line position F, the

portion l le of the typewriter key retaining'lever I ll holding this typewriter key retaining lever ll into dash line position B. As hereinbefore described, when this lever II is in the dash line position B, the notch portion .llf engages the lower side of the typewriter key control bar memher A rendering the typewriter inoperative until another coin is inserted in the coin receiving the operating lever 8. v

Though I have shown anddescribed' a particular construction, combination and arrangement of parts and portions, I do not wish to be limited to this particular construction, combination and arrangement, butdesire to include in the scope of my. invention the construction, combination andarrangement substantially as set forth in the appended claims.

Having thus described my invention, what I vclaim as new and. desire to secure by Letters Patent is:

1. In a coin operated typewriter control apparatus of the class describe-d, the combination with a typewriter having-a key control member near its'lower side, of a typewriter table on which said typewriter is secured, an enclosed casing positioned under said table top directly under. said typewriter, a typewriter key retaining lever pivotally mounted on said enclosed casing and extended through said table top and arranged to engage said typewriter key control bar member, a coin controlled mechanism in operative relation with the lowerend of said lever for controlling the shifting of said lever into and out I of-engage-ment with said typewriter key control bar member, said coin operated typewriter con trol apparatus including tension spring means g mounted in said enclosed casing in'connection with said lever tending to hold said'lever out of engagement with said typewriter keycontrol bar member, and reciprocally mounted gear I and ratchet means in'engagement with the lower end of'said lever member arranged to shift it in opposed relation with said spring.

2. In a coin'voperatedztypewriter control apparatusz'of the .classL-described, the combination near its lower side, of a typewriter table on which said" typewriter ,is' secured, an enclosed. casing with atypewriter? having ia-key; control member positioned under said-table topzdirectlydunder e said typewriter, a typewriter keyi'retaining lever pivotally mounted on said-enclosed casing and extended through said table top and v arranged I-IO to engage said typewriter key'control bar member, acoin controlled mechanism in operative relation with the lower end of said lever for, controlling the: shifting .of' said lever into and outiof engagement' with said typewriter key, control bar member,; said coin operated. typewriter control apparatus including; tensiony, spring means ;.mounted in saidenclosed casing in connection 'w'ithsaid lever tending vto hold-said lever out of engagement with said typewriter key control bar membezyvand reciprocally mounted gear and 

